/**
 * Created:	2001-7-
 * By:		eeorange
 * About: 	hdu 1161 - tolower (super water question)
 * Status:	
 */

#include <ctime>
#include <iostream>
#include <string>
#include <cctype>
using namespace std;


int main(){
	#ifdef LOCAL
		freopen("data.in", "r", stdin);
	#endif
	string line;
	while(getline(cin, line))
	{
		for(unsigned int i=0; i<line.size(); i++) line[i] = tolower(line[i]);
		cout << line << endl;
	}
	return 0;
}


